Asynchrony II: Perception of Temporal Gaps within Periodic and Jittered Pulse Patterns

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Abstract
Thresholds for temporal gaps within periodic and jittered pulse patterns were determined. Gap thresholds within periodic pulse trains are in close agreement with those obtained in a previous study. Extremely fine temporal gap detection (10-20 usec) is achieved for high-frequency pulse trains consisting of many intervals. Reduction in the number of intervals, or introduction of jitter to the pulse train, sharply increases temporal-gap thresholds for high-frequency pulse trains. By contrast, temporal-gap sensitivity for low-frequency pulse trains is relatively independent of the number of intervals or of the amount of jitter. Acute temporal-gap sensitivity is apparently achieved at high pulse frequencies by a spectral analysis of the temporal information, rather than by a direct temporal analysis.

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